Re: [ANN] Lua BitOp 1.0.0 released
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- Subject: Re: [ANN] Lua BitOp 1.0.0 released
- From: Ignacio Burgueño <ignaciob@...>
- Date: 2008年12月17日 12:13:48 -0200
Mike Pall wrote:
Lua BitOp is a C extension module for Lua 5.1 which adds
bitwise operations on numbers.
Thanks, Mike.
Running on WinXP SP3, Lua 5.1.4 [1] with bit.dll packaged as a rock:
lua5.1 -lluarocks.require d:\Lua\LuaBitOp-1.0.0\bitbench.lua
loop baseline 72.3 ns
tobit 240.3 ns
bnot 248.0 ns
bor/band/bxor 345.8 ns
shifts 420.0 ns
rotates 318.3 ns
bswap 244.3 ns
However, the following does not act as expected:
lua5.1 -lluarocks.require d:\Lua\LuaBitOp-1.0.0\nsievebits.lua 9
Primes up to 5120000 356244
Primes up to 2560000 187134
Primes up to 1280000 98610
Surely it's because nsievebits.lua uses 'arg' and my build of Lua has
LUA_COMPAT_VARARG disabled.
Regards,
Ignacio
[1] My laptop specs are:
Intel CoreDuo 1.66 GHz, 667 MHz FSB, 2MB L2 cache
2 GB RAM